Quote:
Originally Posted by mechman600
The difference in density between 70F and 160F is 15%. Can we assume that this difference will equate to a 15% difference in engine load, providing all other variables remain constant?
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At full load, I think you can say that. However, for most cars and trucks, that would not necessarily be true because of their partial loading.
I am assuming that chart is for atmospheric pressure, too. If so, then intake manifold pressure would be a fraction of those density/specific weight values. Still, the basic idea behind the chart supports HAI theory in regard to reducing pumping losses.
Heh... I'd love to get a cheapie datalogger...